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I am a tad bit late, but patch notes for 5.8 are up (sorry if this has been posted already).
Full notes below the cut
Game Update 5.8
Highlights
New Operation Boss, Izax – The final boss of Gods From the Machine is here! The mightiest of the Iokath droid superweapons, Izax is capable of destroying entire fleets of warships – defeating him will require tremendous power and skill.
Conquest Revamp – From a new interface to changes for Guilds of every size. Our improved Conquest system now provides challenge, opportunity, and rewards for all Guilds!
Companion Return: Ashara Zavros - She will return to the Sith Inquisitor’s side, how will things go with her former master?
Companion Return: Vector Hyllus – Imperial Agents will see the return of their crewmate and member of the Killik Hivemind, Vector!
Companion Romance: Arcann - A redeemed Arcann makes his feelings known to those who’ve given him a chance to atone for the evil deeds of his past.
Limited Time Izax Event – Players who defeat Izax on Veteran difficulty before launch of Game Update 5.9: The Nathema Conspiracy will receive a special legacy-based reward and an exclusive title with the launch of 5.9.
General
Conquest tab now lists all Objectives along with the players personal progress.
Guild tab has been renamed to Guild Invasions.
Guild Invasion will display planetary leaderboards, Guilds rewards, and a contribution leaderboard for your Guild.
Completing objectives will now award credits, experience points, and Command Experience in addition to their Conquest points.
Conquest point values have been rebalanced for all Objectives.
In addition to one-time and repeatable, there are now also daily objectives. Some objectives have changed type.
The Invasion bonus for Conquest objectives has been removed.
Classes +Combat
General
The visuals for various Classes “flurry” attacks have been updated to be more accurate with their scrolling combat text, hits, and misses.
Flashpoints + Operations + Uprisings
Operations
Players who previously completed these Achievements will have in-game mail with their Decorations.
Items + Economy
To assist in combating credit inflation, the Galactic Trade Network’s tax rate has been increased to 8% (up from 6%)
Corrected an issue which was causing some Relics to provide higher Bolstered stats than intended.
The Longspur Blaze is now available for sale on each Fleets’ Vehicle Vendor.